Intyee



(No Model.) 2 sneets-ne'efi 1. A. W. MOINTYRE & J. 0. PARISH.

- SAWDUST ELEVATOR.

' No. 249,474. 'Pateni sed'Nov. 15,1881.

2 Sheets-Sheet 2.

Patented Nov. 15,1881.

C N r d A & m R S 4 V W o (NoModeL) 1 i UN TED STATES PATENT OFFIC tARGHIBALD W. MGINTYRE AND JOHN C. PARISH, OF LAURINBURG, N. G.

SAWDUST-ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 249,474, dated November15, 1881.

Application filed June 23, 1881. (N 0 model.)

Toall whom it may concern Be it known that we, AROHIBALD W. Mo- INTYREand JOHN G. PARISH, of Laurinburg, county of Richmond, and State ofNorth Oarolina, have invented certain new and useful Improvements inSawdust-Elevators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, and tothe lettersof reference marked thereon.

Our invention has relation to that class of devices employed inconnection with saw-mills or saw-tables, for the purpose of elevating orcarrying away the sawdust as it is produced; and the invention involvescertain new and nsefularrangements or combinations of parts and detailsof construction, the object of all of which is to produce a simple,cheap, and convenient arrangement for carrying away the dustand lodgingit at any desired point, which arrangement will not interfere with theproper working of the saw or be in the way of the ordinary use of thesaw-table, and which may be easily and quickly located and adapted foruse.

The several features of the invention will be herein first fullydescribed, and then pointed out in the claims.

To illustrate our invention we have shown it as applied in connectionwith an ordinary circular saw; but manifestly it may be applied inconnection with any other ordinary form of saw or sawing-table, and alsoin connection with two or more saws, constituting a gang, as well aswith only the single saw.

In the drawings, Figure l is a perspective view, showing the generalarrangement of the elevator with respect to the saw, the saw-table beingomitted for convenience of illustration. Fig. 2 is a sectional view ofthe elevator or carrier detached. Fig. 3 is an elevation or side view,and Fig. dis a plan, of the same.

In all these figures like letters of reference, wherever they occur,indicate corresponding parts.

A is the saw, mounted upon and driven by its shaft B, which latter isturned by the band or equivalent means 0. t

D represents the fly-wheel of an engine 0 other motive power, and theband 0 connects this wheel with the shaft B, running upon the belt-wheelE in the usual manner of running the circular saws. Below the saw, orbelow the gang of saws, if more than one be employed, we locate thehopper F of the elevator-casing, the construction of which will beexplained hereinafter. We find it most convenient and advantageous todrive the elevator-buckets from the driven shaft of the saw; and inorderto do this without interfering with the room or space required about thesaw-table, and without exposing the gearing or belting to be clogged pwith dust,which would interfere upon the shaft L, which controls themovement of the elevator-buckets. The gearing being so located andarranged, it is plain that the shaftL will turn as the saw turns, and

therefore the elevating-buckets will be kept in motion while thesaw iscutting, and the rapidity of motion in the elevator-buckets may be gagedto correspond with the cutting by suitable proportions being maintainedbetween the band wheels or gears, in a manner well understood. By thisarrangement the elevatorbuckets are driven or compelled to move throughthe medium of power appliedyat or near the point where they delivertheir loada point readily accessible for repairs or alterations withoutthe necessity of discontinuing the use of the saw, and most advantageousin the matter of consumption of power and in regulatin g the speed ofthe elevator-buckets. The space above the saw-table affords ample roomfor enlarging the wheels, so as to produce a slow motion in thecarriers. This cannot wellbe accomplished by gearing below thesaw-table,

and consequently the elevators are usually made to run at an unnecessaryhigh speed and at theexpense of power required for driving the saw. Afurther prominent advantage of the arrangement shown is that ourimproved elevator may be easily applied to the saw-ta- IOC bles as theyare now ordinarilyconstructed, and it does not require alteration orspecial Construction of the table to enable the elevator run over thedriving-wheel 0, located upon shaft L, and over the loose guiding-wheeld at the lower end of the casin g. For economy of space we make thelower end of theelevator curved, substantially as shown, so as toaccommodate the required movements of thebuckets aroundwheeld, and so asto direct any sawdust which may pass the endless belt at the region ofthe hopper into the upcoming buckets, and thereby keep the casin g freeand clear. The casing between the ends is intended to be made of anylight stuff, and the top and bottom pieces may beset upon the sides withscrews in such mannenthat theymay be quickly removedif for any purposeitbe desired to reach the interior. The elevatorcasing is inclinedupwardly from the saw-table, and the hopper F is secured upon thecasin gover an opening therein in such mannerias'to best catch the dust fromthe saw. The supporting-frame e sustains the hopper F, and it, as well.as the hopper, may be readily removed, if desired. The sides of thehopper are inclined, so as to properly direct the sawdust down throughtheopening in the casing. The dischargingmouth of the casing is locatedupon the. under side, and is so arranged that as the dust leaves thebuckets it will fallthrough this mouth. The mouth is guarded by theextension f, one side of which, as g, extends up to the top of the casing and closes the extreme end thereof. This piece 9 is made removable, soas to afford access to this part of the'casing, if desired. Ifnecessary, the extension fmay be lengthened at pleasure, either byemployment of boards like those of the easing,or.by the application of acanvas or cloth tube, in the usual manner.

Over the mouth of the hopper we locate a sitter, i',which may be made ofany suitable material, and which is agitated by means or cranks, as 70,applied to the lower elevatorwheel axle and working into pivoted arms,as Z, (shown at Fig. 3.) The sifter prevents the accumulation of sawdustin the hopperand insures a free delivery to the elevator-buckets. Thesifter also operates to prevent admission of sticks and cuttings to theelevator, which might clog it up or interfere with its smooth and easyworking. Any sticks, &c., which fall upon the sifter will be graduallycarried to the edge and dropped over outside of the hopper.

It will be apparent that the elevator may be made of any desired sizeand length,and any required number, size, and form of buckets may beemployed.

The simplicity, durability, and convenience ofthe improved device andarrangements above explained will commend them for adoption insituations where required.

Having now fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus for elevating sawdust from beneath a saw, thecombination, with an elevator provided with a hopper, of the sieve i,fulcrum-lever l, slotted at its lower end, and the crank 1c, attached tothe axis of the pulley or wheel at the lower end of the elevator,substantially as and for the purposes set forth.

2. In an elevator of the character herein set forth for conductingsawdust, the combination, with the endless chain of buckets mounted in acasing and driven by the wheel in the end of said casing most remotefrom the saw, ofa

hopper adapted to deliver the sawdust to thebuckets, and a siftermounted over said hopper and agitated by the crankJa, attached to thewheel in the lower end of the casing, the

latter wheel being driven by the chain of buckets, substantially asshown and described.

In testimony that we claim the foregoing we have hereunto set our handsin the presence of two witnesses.

A. W, MOINTYRE. JOHN G. PARISH. Witnesses:

J. T. JOHN, Jr.,' MAXoY L. JOHN.

